BindingList<T>.AllowRemove 屬性

定義

命名空間:

System.ComponentModel

組件:

System.ComponentModel.TypeConverter.dll

來源:

BindingList.cs

取得或設定值，指出您是否可以從集合移除項目。

public:
 property bool AllowRemove { bool get(); void set(bool value); };

public bool AllowRemove { get; set; }

member this.AllowRemove : bool with get, set

Public Property AllowRemove As Boolean

屬性值

Boolean

如果您可以使用 RemoveItem(Int32) 方法從清單移除項目，則為 true，否則為 false。 預設為 true。

範例

下列程式代碼範例示範如何設定 AllowRemove 屬性。 如需完整的範例，請參閱 BindingList<T> 類別概觀主題。

    // Declare a new BindingListOfT with the Part business object.
    BindingList<Part> listOfParts; 
    private void InitializeListOfParts()
    {
        // Create the new BindingList of Part type.
        listOfParts = new BindingList<Part>();

        // Allow new parts to be added, but not removed once committed.        
        listOfParts.AllowNew = true;
        listOfParts.AllowRemove = false;

        // Raise ListChanged events when new parts are added.
        listOfParts.RaiseListChangedEvents = true;

        // Do not allow parts to be edited.
        listOfParts.AllowEdit = false;
        
        // Add a couple of parts to the list.
        listOfParts.Add(new Part("Widget", 1234));
        listOfParts.Add(new Part("Gadget", 5647));
    }

' Declare a new BindingListOfT with the Part business object.
Private WithEvents listOfParts As BindingList(Of Part)

Private Sub InitializeListOfParts()

    ' Create the new BindingList of Part type.
    listOfParts = New BindingList(Of Part)

    ' Allow new parts to be added, but not removed once committed.        
    listOfParts.AllowNew = True
    listOfParts.AllowRemove = False

    ' Raise ListChanged events when new parts are added.
    listOfParts.RaiseListChangedEvents = True

    ' Do not allow parts to be edited.
    listOfParts.AllowEdit = False

    ' Add a couple of parts to the list.
    listOfParts.Add(New Part("Widget", 1234))
    listOfParts.Add(New Part("Gadget", 5647))

End Sub

備註

屬性 AllowRemove 通常由其他元件用來判斷是否允許移除專案。

當 設定為新值時 AllowRemove ， ListChanged 就會發生類型的 Reset 事件。

另請參閱

• RemoveItem(Int32)
• AllowEdit
• AllowNew